Integrate X^3sin(x^2) | No Substitutions, No Chaos

[1MileCrash]

Find the integral of

X^3sin(x^2)

No useful substitutions I can find, integration by parts gets chaotic.

 

[LCKurtz]

Write it as x(x²)sin(x²) and begin with substitution u = x².

 

[1MileCrash]

Got the answer. Thank you.

I wish I were able to recognize these things more quickly.

 

[SammyS]

Got the answer. Thank you.

I wish I were able to recognize these things more quickly.

Practice, practice, practice ...